Starting Monday night April 2nd, and continuing through Friday night, April 7th, State Route 12 and the Rio Vista Bridge will be closed in both directions between the hours of 10:00 p.m. and 5:00 a.m., for the purpose of seismic retrofit work and portal brace repair. State Route 12 and the Rio Vista Bridge will also be closed the following week starting Sunday night, April 8th, and continuing through Thursday night, April 12th, between 10:00 p.m. and 5:00 a.m.

Changeable message signs will give motorists advance warning and detour signs will direct traffic around the work. Traffic from westbound Route 12 will be detoured via Route 160 south to the junction of Route 4 and then west on Route 4 to I-680 north and north on I-680 to I-80 east and east on I-80 to the junction of Route 12 and detour end.

Traffic for eastbound Route 12 will be detoured via westbound I-80 to southbound I-680 and south on I-680 to Route 4 east and east on Route 4 to Route 160 north and north on Route 160 to the junction of Route 12 and detour end.

Traffic delays are anticipated, use of alternate routes is advised, when possible. For more Information on Bay Area travel, call TravInfo at 817-1717.